Broadband electroacoustic delay lines

ABSTRACT

In a broadband microwave acoustic delay line, two or more transducers are used for energy translation from electromagnetic into acoustic (one type) and reverse (the other type) which are mechanically independent and resonant at acoustic frequencies different from one to the others. Each transducer of one type is connected to a first end of a matching section which constitutes a series resonant circuit tuned at a frequency within the band different from the frequency corresponding to any other transducer. The second ends of the two or more matching sections are connected at the same end of a wideband impedance transformer.



